diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/ByteBuffer.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/ByteBuffer.java | 623 |
1 files changed, 0 insertions, 623 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/ByteBuffer.java b/src/main/java/com/lowagie/text/pdf/ByteBuffer.java deleted file mode 100644 index 695d4c5..0000000 --- a/src/main/java/com/lowagie/text/pdf/ByteBuffer.java +++ /dev/null @@ -1,623 +0,0 @@ -/*
- * $Id: ByteBuffer.java,v 1.69 2006/01/31 18:05:22 psoares33 Exp $
- * $Name: $
- *
- * Copyright 2000, 2001, 2002 by Paulo Soares.
- *
- * The contents of this file are subject to the Mozilla Public License Version 1.1
- * (the "License"); you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the License.
- *
- * The Original Code is 'iText, a free JAVA-PDF library'.
- *
- * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
- * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
- * All Rights Reserved.
- * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
- * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
- *
- * Contributor(s): all the names of the contributors are added in the source code
- * where applicable.
- *
- * Alternatively, the contents of this file may be used under the terms of the
- * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
- * provisions of LGPL are applicable instead of those above. If you wish to
- * allow use of your version of this file only under the terms of the LGPL
- * License and not to allow others to use your version of this file under
- * the MPL, indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by the LGPL.
- * If you do not delete the provisions above, a recipient may use your version
- * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the MPL as stated above or under the terms of the GNU
- * Library General Public License as published by the Free Software Foundation;
- * either version 2 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
- * details.
- *
- * If you didn't download this code from the following link, you should check if
- * you aren't using an obsolete version:
- * http://www.lowagie.com/iText/
- */
-
-package com.lowagie.text.pdf;
-import java.io.UnsupportedEncodingException;
-import java.io.OutputStream;
-import java.io.IOException;
-import com.lowagie.text.DocWriter;
-import java.text.DecimalFormat;
-import java.text.DecimalFormatSymbols;
-import java.util.Locale;
-
-/**
- * Acts like a <CODE>StringBuffer</CODE> but works with <CODE>byte</CODE> arrays.
- * Floating point is converted to a format suitable to the PDF.
- * @author Paulo Soares (psoares@consiste.pt)
- */
-
-public class ByteBuffer extends OutputStream {
- /** The count of bytes in the buffer. */
- protected int count;
-
- /** The buffer where the bytes are stored. */
- protected byte buf[];
-
- private static int byteCacheSize = 0;
-
- private static byte[][] byteCache = new byte[byteCacheSize][];
- public static byte ZERO = (byte)'0';
- private static final char[] chars = new char[] {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
- private static final byte[] bytes = new byte[] {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102};
- /**
- * If <CODE>true</CODE> always output floating point numbers with 6 decimal digits.
- * If <CODE>false</CODE> uses the faster, although less precise, representation.
- */
- public static boolean HIGH_PRECISION = false;
- private static final DecimalFormatSymbols dfs = new DecimalFormatSymbols(Locale.US);
-
- /** Creates new ByteBuffer with capacity 128 */
- public ByteBuffer() {
- this(128);
- }
-
- /**
- * Creates a byte buffer with a certain capacity.
- * @param size the initial capacity
- */
- public ByteBuffer(int size) {
- if (size < 1)
- size = 128;
- buf = new byte[size];
- }
-
- /**
- * Sets the cache size.
- * <P>
- * This can only be used to increment the size.
- * If the size that is passed through is smaller than the current size, nothing happens.
- *
- * @param size the size of the cache
- */
-
- public static void setCacheSize(int size) {
- if (size > 3276700) size = 3276700;
- if (size <= byteCacheSize) return;
- byte[][] tmpCache = new byte[size][];
- for (int i = 0; i < byteCacheSize; i++) {
- tmpCache[i] = byteCache[i];
- }
- byteCache = tmpCache;
- byteCacheSize = size;
- }
-
- /**
- * You can fill the cache in advance if you want to.
- *
- * @param decimals
- */
-
- public static void fillCache(int decimals) {
- int step = 1;
- switch(decimals) {
- case 0:
- step = 100;
- break;
- case 1:
- step = 10;
- break;
- }
- for (int i = 1; i < byteCacheSize; i += step) {
- if (byteCache[i] != null) continue;
- byteCache[i] = convertToBytes(i);
- }
- }
-
- /**
- * Converts an double (multiplied by 100 and cast to an int) into an array of bytes.
- *
- * @param i the int
- * @return a bytearray
- */
-
- private static byte[] convertToBytes(int i) {
- int size = (int)Math.floor(Math.log(i) / Math.log(10));
- if (i % 100 != 0) {
- size += 2;
- }
- if (i % 10 != 0) {
- size++;
- }
- if (i < 100) {
- size++;
- if (i < 10) {
- size++;
- }
- }
- size--;
- byte[] cache = new byte[size];
- size --;
- if (i < 100) {
- cache[0] = (byte)'0';
- }
- if (i % 10 != 0) {
- cache[size--] = bytes[i % 10];
- }
- if (i % 100 != 0) {
- cache[size--] = bytes[(i / 10) % 10];
- cache[size--] = (byte)'.';
- }
- size = (int)Math.floor(Math.log(i) / Math.log(10)) - 1;
- int add = 0;
- while (add < size) {
- cache[add] = bytes[(i / (int)Math.pow(10, size - add + 1)) % 10];
- add++;
- }
- return cache;
- }
-
- /**
- * Appends an <CODE>int</CODE>. The size of the array will grow by one.
- * @param b the int to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append_i(int b) {
- int newcount = count + 1;
- if (newcount > buf.length) {
- byte newbuf[] = new byte[Math.max(buf.length << 1, newcount)];
- System.arraycopy(buf, 0, newbuf, 0, count);
- buf = newbuf;
- }
- buf[count] = (byte)b;
- count = newcount;
- return this;
- }
-
- /**
- * Appends the subarray of the <CODE>byte</CODE> array. The buffer will grow by
- * <CODE>len</CODE> bytes.
- * @param b the array to be appended
- * @param off the offset to the start of the array
- * @param len the length of bytes to append
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(byte b[], int off, int len) {
- if ((off < 0) || (off > b.length) || (len < 0) ||
- ((off + len) > b.length) || ((off + len) < 0) || len == 0)
- return this;
- int newcount = count + len;
- if (newcount > buf.length) {
- byte newbuf[] = new byte[Math.max(buf.length << 1, newcount)];
- System.arraycopy(buf, 0, newbuf, 0, count);
- buf = newbuf;
- }
- System.arraycopy(b, off, buf, count, len);
- count = newcount;
- return this;
- }
-
- /**
- * Appends an array of bytes.
- * @param b the array to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(byte b[]) {
- return append(b, 0, b.length);
- }
-
- /**
- * Appends a <CODE>String</CODE> to the buffer. The <CODE>String</CODE> is
- * converted according to the encoding ISO-8859-1.
- * @param str the <CODE>String</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(String str) {
- if (str != null)
- return append(DocWriter.getISOBytes(str));
- return this;
- }
-
- /**
- * Appends a <CODE>char</CODE> to the buffer. The <CODE>char</CODE> is
- * converted according to the encoding ISO-8859-1.
- * @param c the <CODE>char</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(char c) {
- return append_i(c);
- }
-
- /**
- * Appends another <CODE>ByteBuffer</CODE> to this buffer.
- * @param buf the <CODE>ByteBuffer</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(ByteBuffer buf) {
- return append(buf.buf, 0, buf.count);
- }
-
- /**
- * Appends the string representation of an <CODE>int</CODE>.
- * @param i the <CODE>int</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(int i) {
- return append((double)i);
- }
-
- public ByteBuffer append(byte b) {
- return append_i(b);
- }
-
- public ByteBuffer appendHex(byte b) {
- append(bytes[(b >> 4) & 0x0f]);
- return append(bytes[b & 0x0f]);
- }
-
- /**
- * Appends a string representation of a <CODE>float</CODE> according
- * to the Pdf conventions.
- * @param i the <CODE>float</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(float i) {
- return append((double)i);
- }
-
- /**
- * Appends a string representation of a <CODE>double</CODE> according
- * to the Pdf conventions.
- * @param d the <CODE>double</CODE> to be appended
- * @return a reference to this <CODE>ByteBuffer</CODE> object
- */
- public ByteBuffer append(double d) {
- append(formatDouble(d, this));
- return this;
- }
-
- /**
- * Outputs a <CODE>double</CODE> into a format suitable for the PDF.
- * @param d a double
- * @return the <CODE>String</CODE> representation of the <CODE>double</CODE>
- */
- public static String formatDouble(double d) {
- return formatDouble(d, null);
- }
-
- /**
- * Outputs a <CODE>double</CODE> into a format suitable for the PDF.
- * @param d a double
- * @param buf a ByteBuffer
- * @return the <CODE>String</CODE> representation of the <CODE>double</CODE> if
- * <CODE>buf</CODE> is <CODE>null</CODE>. If <CODE>buf</CODE> is <B>not</B> <CODE>null</CODE>,
- * then the double is appended directly to the buffer and this methods returns <CODE>null</CODE>.
- */
- public static String formatDouble(double d, ByteBuffer buf) {
- if (HIGH_PRECISION) {
- DecimalFormat dn = new DecimalFormat("0.######", dfs);
- String sform = dn.format(d);
- if (buf == null)
- return sform;
- else {
- buf.append(sform);
- return null;
- }
- }
- boolean negative = false;
- if (Math.abs(d) < 0.000015) {
- if (buf != null) {
- buf.append(ZERO);
- return null;
- } else {
- return "0";
- }
- }
- if (d < 0) {
- negative = true;
- d = -d;
- }
- if (d < 1.0) {
- d += 0.000005;
- if (d >= 1) {
- if (negative) {
- if (buf != null) {
- buf.append((byte)'-');
- buf.append((byte)'1');
- return null;
- } else {
- return "-1";
- }
- } else {
- if (buf != null) {
- buf.append((byte)'1');
- return null;
- } else {
- return "1";
- }
- }
- }
- if (buf != null) {
- int v = (int) (d * 100000);
-
- if (negative) buf.append((byte)'-');
- buf.append((byte)'0');
- buf.append((byte)'.');
-
- buf.append( (byte)(v / 10000 + ZERO) );
- if (v % 10000 != 0) {
- buf.append( (byte)((v / 1000) % 10 + ZERO) );
- if (v % 1000 != 0) {
- buf.append( (byte)((v / 100) % 10 + ZERO) );
- if (v % 100 != 0) {
- buf.append((byte)((v / 10) % 10 + ZERO) );
- if (v % 10 != 0) {
- buf.append((byte)((v) % 10 + ZERO) );
- }
- }
- }
- }
- return null;
- } else {
- int x = 100000;
- int v = (int) (d * x);
-
- StringBuffer res = new StringBuffer();
- if (negative) res.append('-');
- res.append("0.");
-
- while( v < x/10 ) {
- res.append('0');
- x /= 10;
- }
- res.append(v);
- int cut = res.length() - 1;
- while (res.charAt(cut) == '0') {
- --cut;
- }
- res.setLength(cut + 1);
- return res.toString();
- }
- } else if (d <= 32767) {
- d += 0.005;
- int v = (int) (d * 100);
-
- if (v < byteCacheSize && byteCache[v] != null) {
- if (buf != null) {
- if (negative) buf.append((byte)'-');
- buf.append(byteCache[v]);
- return null;
- } else {
- String tmp = PdfEncodings.convertToString(byteCache[v], null);
- if (negative) tmp = "-" + tmp;
- return tmp;
- }
- }
- if (buf != null) {
- if (v < byteCacheSize) {
- //create the cachebyte[]
- byte[] cache;
- int size = 0;
- if (v >= 1000000) {
- //the original number is >=10000, we need 5 more bytes
- size += 5;
- } else if (v >= 100000) {
- //the original number is >=1000, we need 4 more bytes
- size += 4;
- } else if (v >= 10000) {
- //the original number is >=100, we need 3 more bytes
- size += 3;
- } else if (v >= 1000) {
- //the original number is >=10, we need 2 more bytes
- size += 2;
- } else if (v >= 100) {
- //the original number is >=1, we need 1 more bytes
- size += 1;
- }
-
- //now we must check if we have a decimal number
- if (v % 100 != 0) {
- //yes, do not forget the "."
- size += 2;
- }
- if (v % 10 != 0) {
- size++;
- }
- cache = new byte[size];
- int add = 0;
- if (v >= 1000000) {
- cache[add++] = bytes[(v / 1000000)];
- }
- if (v >= 100000) {
- cache[add++] = bytes[(v / 100000) % 10];
- }
- if (v >= 10000) {
- cache[add++] = bytes[(v / 10000) % 10];
- }
- if (v >= 1000) {
- cache[add++] = bytes[(v / 1000) % 10];
- }
- if (v >= 100) {
- cache[add++] = bytes[(v / 100) % 10];
- }
-
- if (v % 100 != 0) {
- cache[add++] = (byte)'.';
- cache[add++] = bytes[(v / 10) % 10];
- if (v % 10 != 0) {
- cache[add++] = bytes[v % 10];
- }
- }
- byteCache[v] = cache;
- }
-
- if (negative) buf.append((byte)'-');
- if (v >= 1000000) {
- buf.append( bytes[(v / 1000000)] );
- }
- if (v >= 100000) {
- buf.append( bytes[(v / 100000) % 10] );
- }
- if (v >= 10000) {
- buf.append( bytes[(v / 10000) % 10] );
- }
- if (v >= 1000) {
- buf.append( bytes[(v / 1000) % 10] );
- }
- if (v >= 100) {
- buf.append( bytes[(v / 100) % 10] );
- }
-
- if (v % 100 != 0) {
- buf.append((byte)'.');
- buf.append( bytes[(v / 10) % 10] );
- if (v % 10 != 0) {
- buf.append( bytes[v % 10] );
- }
- }
- return null;
- } else {
- StringBuffer res = new StringBuffer();
- if (negative) res.append('-');
- if (v >= 1000000) {
- res.append( chars[(v / 1000000)] );
- }
- if (v >= 100000) {
- res.append( chars[(v / 100000) % 10] );
- }
- if (v >= 10000) {
- res.append( chars[(v / 10000) % 10] );
- }
- if (v >= 1000) {
- res.append( chars[(v / 1000) % 10] );
- }
- if (v >= 100) {
- res.append( chars[(v / 100) % 10] );
- }
-
- if (v % 100 != 0) {
- res.append('.');
- res.append( chars[(v / 10) % 10] );
- if (v % 10 != 0) {
- res.append( chars[v % 10] );
- }
- }
- return res.toString();
- }
- } else {
- StringBuffer res = new StringBuffer();
- if (negative) res.append('-');
- d += 0.5;
- long v = (long) d;
- return res.append(v).toString();
- }
- }
-
- /**
- * Sets the size to zero.
- */
- public void reset() {
- count = 0;
- }
-
- /**
- * Creates a newly allocated byte array. Its size is the current
- * size of this output stream and the valid contents of the buffer
- * have been copied into it.
- *
- * @return the current contents of this output stream, as a byte array.
- */
- public byte[] toByteArray() {
- byte newbuf[] = new byte[count];
- System.arraycopy(buf, 0, newbuf, 0, count);
- return newbuf;
- }
-
- /**
- * Returns the current size of the buffer.
- *
- * @return the value of the <code>count</code> field, which is the number of valid bytes in this byte buffer.
- */
- public int size() {
- return count;
- }
-
- public void setSize(int size) {
- if (size > count || size < 0)
- throw new IndexOutOfBoundsException("The new size must be positive and <= of the current size");
- count = size;
- }
-
- /**
- * Converts the buffer's contents into a string, translating bytes into
- * characters according to the platform's default character encoding.
- *
- * @return String translated from the buffer's contents.
- */
- public String toString() {
- return new String(buf, 0, count);
- }
-
- /**
- * Converts the buffer's contents into a string, translating bytes into
- * characters according to the specified character encoding.
- *
- * @param enc a character-encoding name.
- * @return String translated from the buffer's contents.
- * @throws UnsupportedEncodingException
- * If the named encoding is not supported.
- */
- public String toString(String enc) throws UnsupportedEncodingException {
- return new String(buf, 0, count, enc);
- }
-
- /**
- * Writes the complete contents of this byte buffer output to
- * the specified output stream argument, as if by calling the output
- * stream's write method using <code>out.write(buf, 0, count)</code>.
- *
- * @param out the output stream to which to write the data.
- * @exception IOException if an I/O error occurs.
- */
- public void writeTo(OutputStream out) throws IOException {
- out.write(buf, 0, count);
- }
-
- public void write(int b) throws IOException {
- append((byte)b);
- }
-
- public void write(byte[] b, int off, int len) {
- append(b, off, len);
- }
-
- public byte[] getBuffer() {
- return buf;
- }
-}
\ No newline at end of file |